[Dale Campbell]

I fly from a short and somewhat dirty field. The runway is paved but nothing else is paved. I start both engines on my concrete pad in front of hanger that I know is clean. I sit there until the engines get into the green. I then put the front engine at idle and use the rear engine to power me to the runway. I do my run up where the runway is clean. After landing I shut down front engine as I leave the paved runway to taxi back to hanger, so front engine does not kick up dirt and drive it into rear prop.